# STC SA2578NM - Type: Supplemental type certificate - Status: Current, Reissued - Holder: Dynamic Aviation Group Inc., United States - Description: Installation of front spar reinforcement kit. - Applied: April 10, 1985 - Status date: October 2, 2014 - Product: Aircraft, Small Airplane - Certification basis: Part 3, Part 21 - Data sheets: [TCDS 5A4](https://openairdocs.org/tcds/5A4) - Certificate PDF: https://openairdocs.org/files/sha256/90/76/9076ad5143eeccf12483fca5fe3cddfabe1638df083198e7d675cd31f13b6ef5 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C5CA16AAE753401986257D73004F021D.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA2578NM ## ADs that name it (0) None. ## Approved models (1) - Beechcraft Corporation D50 ([TCDS 5A4](https://openairdocs.org/tcds/5A4)) ## What the certificate says Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record. This Certificate issued to Dynamic Aviation Group, Inc. 1402 Airport Rd., PO Box 7 Bridgewater, VA 22812 Part 3* of the Civil Air Regulations *Refer to Aircraft Specification No. 54A for Complete Certification Basis. Original Product Type Certificate Number : 5A Make : Beech Model : D50 Description of Type Design Change: Installation of front spar reinforcement kit in accordance with Avia Design Master Drawing List E.O.TB-851, Issue 1, dated April 10, 1985, or later FAA approved revisions. Limitations and Conditions: The approval of this change in type design applies to the specified model that is otherwise unmodified. This approval should not be extended to other aircraft of this model on which other previously approved modifications are incorporated unless it is determined by the installer that the interrelationship between this change and any of those other previously approved modifications will introduce no adverse effect upon the airworthiness of that aircraft. If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission. A copy of this STC must be included in the permanent records of each airplane modified in accordance with this STC. Date of application : April 10, 1985 Date of issuance : June 14, 1985 Date reissued : October 2, 2014 (Signature) Supervisor, Technical and Administrative Support Staff Los Angeles Aircraft Certification Office (Title) Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) (Number and street) (City, State, and ZIP Code) from (Name of grantor) (Print or type) (Address of grantor) (Number and street) (City, State, and ZIP Code) Signature of grantor (In ink): U.S. GPO 1987-763-289 ## Every issue (1) - October 2, 2014: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/90/76/9076ad5143eeccf12483fca5fe3cddfabe1638df083198e7d675cd31f13b6ef5) --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.